Problem:    When using XIM the gui test may fail.
Solution:   Only use --not-a-term when not using XIM.

Problem:    CurSearch highlight is often wrong.
Solution:   Remember the last highlighted position and redraw when needed.

Problem:    vim_regsub() can overwrite the destination.
Solution:   Pass the destination length, give an error when it doesn't fit.

Problem:    Can escape a terminal popup window when the job is finished.
Solution:   Only check for a finished job where it is relevant.
            (closes #10253)

Problem:    Command line test fails.
Solution:   Also beep when cmdline win can't be opened because of locks.
            Make the test not beep.  Make the test pass on MS-Windows.

Problem:    Can open a cmdline window from a substitute expression.
Solution:   Disallow opening a command line window when text or buffer is
            locked.

Problem:    Scrollbar thumb in tall scrolled popup not visible.
Solution:   Show at least one thumb character. (fixes 10492)

Problem:    Cannot close a terminal popup with "NONE" job.
Solution:   Adjust the conditions for whether a job is running.
            (closes #10498)

Problem:    Scrollbar thumb in scrolled popup not visible.
Solution:   Show at least one thumb character. (fixes 10492)

Problem:    Confusing error if first argument of popup_create() is wrong.
Solution:   Give a more informative error.